Visualisation of surface acoustic waves

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Visualisation of surface acoustic waves

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© The Institution of Electrical Engineers
Published

A simple method for acoustic-surface-wave visualisation is described which is applicable to both piezoelectric and non-piezoelectric surfaces. Briefly, a uniform layer of small particles, comparable to the wavelength, is distributed over the acoustic surface. The acoustic-beam pattern of an incident surface wave is then traced out by scattering the particles out of the propagation path. Experiments at 100 MHz on lithium-niobate surfaces are described.

Inspec keywords: acoustic imaging

Subjects: Display technology; Acoustic wave devices

References

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      • R. Adler , A. Korpel , P. Desmares . An instrument for making surface waves visible. IEEE Trans.
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      • A.P. van den Heuval . Surface-wave electronics. Science & Technology
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      • B.A. Richardson , G.S. Kino . Probing of elastic surface waves in piezoelectric media.
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      • R.M. White , F.W. Voltmer . Direct piezoelectric coupling to surface elastic waves. Appl. Phys. Lett.
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      • Auld, B.A., Wilkinson, J.H.: `Geometric optics of acoustic waves in magnetic and piezoelectric media', Proceedings of the Symposium on Modern Optics, 1967, 17, , p. 203–218.
    6. 6)
      • W.P. Mason . (1958) , Physical acoustics and the properties of solids.
    7. 7)
      • Engan, H.: `Experiments with elastic surface waves in piezoelectric ceramics', TE-128, ELAB Report, .
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